Model Information

North American Regional Climate Change Assessment Program

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	CRCM+CCSM CRCM+CGCM3 ECP2+GFDL ECP2+HadCM3 NEW! HRM3+GFDL HRM3+HadCM3 MM5I+CCSM MM5I+HadCM3 NEW! RCM3+CGCM3 RCM3+GFDL WRFG+CCSM WRFG+CGCM3

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Model Information

Regional Models

Model	Aliases	Modeling Group	Full Name
CRCM	MRCC	OURANOS / UQAM	Canadian Regional Climate Model / le Modèle Régional Canadien du Climat
ECPC	RSM	UC San Diego / Scripps	Experimental Climate Prediction Center Regional Spectral Model
HRM3	PRECIS, HadRM3	Hadley Centre	Hadley Regional Model 3 / Providing REgional Climates for Impact Studies
MM5I	MM5, MM5P*	Iowa State University	MM5 - PSU/NCAR mesoscale model
RCM3	RegCM3	UC Santa Cruz	Regional Climate Model version 3
WRFP	WRF	Pacific Northwest Nat'l Lab	Weather Research & Forecasting model

*Notes: The first column is the 4-letter abbreviation code used in naming datafiles. The MM5 model was initially tested with two sets of parameters, one from PNNL and one from ISU. The MM5 model is being run by the ISU modeling group, and the results are therefore referred to as MM5I, but it is being run using the PNNL parameters because they produced better results. If data generated using the ISU parameters becomes available, it will be designated MAIP (MM5 - Alternate ISU Parameters) to try and minimize confusion.

Detailed characteristics of the RCMs

Drivers

Driver	Full Name	Ensemble Member Used
CCSM	Community Climate System Model	b30.030e (ctl), b30.042e (fut)
CGCM3	Third Generation Coupled Global Climate Model	CGCM #4
GFDL	Geophysical Fluid Dynamics Laboratory GCM	20C3M, run2; sresa2, run1
HadCM3	Hadley Centre Coupled Model, version 3	Custom run for NARCCAP
NCEP	NCEP/DOE AMIP-II Reanalysis	N/A

*Note: NCEP is not a GCM, but a reanalysis, a restrospective model of the atmosphere based on observed data. NARCCAP uses NCEP-DOE Reanalysis 2, sometimes referred to as "NCEP-2".

Detailed characteristics of the AOGCMs

Map Projections

CRCM	Polar Stereographic
ECPC	Polar Stereographic
HRM3	Rotated Pole
MM5I	Lambert Conformal
RCM3	Transverse Mercator
WRFP	Lambert Conformal

RCM / GCM combinations

	Phase I	Phase II
	NCEP	GFDL	CGCM3	HADCM3	CCSM
CRCM	X		1		2
ECPC	X	1		2
HRM3	X	2		1
MM5I	X			2	1
RCM3	X	1	2
WRFP	X		2		1
timeslice		X			X

1: First pairing to be run
2: Second pairing to be run

Timeslice Experiments:
The two timeslice experiments are run using the GFDL AM2.1 and the NCAR CAM3 models. These correspond to the GFDL and CCSM drivers, respectively. Each RCM is therefore paired with one of the GCMs that has a corresponding timeslice experiment.

The National Center for Atmospheric Research is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.